Coverage Analysis of Cell-Edge Users in Reconfigurable Intelligent Surface-Assisted Cellular Networks

Hanwen Chen, Howard H. Yang, Qin Tao, C. Zhong
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Abstract

We study the coverage probability of cell-edge users in a cellular network where reconfigurable intelligent surfaces (RISs), plains of low-cost antenna elements that improve wireless channel quality by providing auxiliary transmission paths, are employed for signal power enhancement. We model the locations of cell-edge users as a Poisson hole process (PHP) in which each user is paired with a RIS. By leveraging tools from stochastic geometry, we derive a analytical-form expression for the coverage probability, accounting for effects from channel fading, path loss, and interference that arised from co-channel transmissions of the base stations as well as those reflected by the RISs. The analytical results are corroborated by simulations and provide useful insights to the deployment of RISs in a cellular system.
可重构智能表面辅助蜂窝网络中蜂窝边缘用户的覆盖分析
我们研究了蜂窝网络中蜂窝边缘用户的覆盖概率,其中可重构智能表面(RISs)是通过提供辅助传输路径来提高无线信道质量的低成本天线单元平原,用于信号功率增强。我们将蜂窝边缘用户的位置建模为泊松洞过程(PHP),其中每个用户与RIS配对。通过利用随机几何工具,我们推导了覆盖概率的解析表达式,考虑了信道衰落、路径损耗和基站同信道传输产生的干扰以及RISs反映的干扰的影响。仿真结果证实了分析结果,并为在蜂窝系统中部署RISs提供了有用的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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